Heating system.



L. 0. 0RD. HEATING SYSTEM.

APPLICATION FILED APR. 12, 1912.

1,131,947. Patented Mar. 16,1915,

2 SHEETSSHEET 1.

Figl.

THE NORRIS PETERS (70.. PHOTD-LITHQ, WASHINGTON, D. C.

L. G. 0RD. HEATING SYSTEM.

APPLICATION IILED APR. 12, 1912.

1,131Q947. Patented Mar.16,1915,

2 SHEETS-$HEET 2 Fig-7. Fig-e. Fig-3 THE NORRIS PETERS co., PHoTo-L/THCL. WASHINGTON. D. c.

UNHE

FIQFA.

LEWIS CRAVEN 0RD, 0F MONTREAL, QUEBEC, CANADA, ASSIGNOR 'IO RICHARD W. BURNETT, OF MONTREAL, CANADA.

HEATING SYSTEM.

Specification of Letters Patent.

Patented Mar. 116, 15915.

To all whom it may concern Be it known that 1, Lewis CRAVEN 0RD, of the city of Montreal, in the Province of Quebec, Dominion of Canada, have invented certain new and useful Improvements in Heating Systems, of which the following is a specification.

My invention relates particularly to the automatic control of steam heating systems, but certain of its features in the broader conception thereof are applicable to other uses.

The invention has for its principal object to utilize the heat conducting medium itself to automatically control the heat radiated, and, at the same time, maintain a clear passage through the radiator for the flow of the medium by drawing from the radiator at any one of a number of diiferent points demarcating limitations of its heat radiating surface to cause the portion of the medium thus drawn to act upon and operate the means controlling the supply of the medium.

A further object is to provide as articles of commerce devices for adjusting the points at which the heat conducting medium is drawn from the radiator, and for thermostatically controlling the supply to the radiator.

The invention may be said, broadly, to consist of adjustable means effecting a com munication between one of a plurality of different points in a radiator and means for controlling the same; and, specifically speaking, it consists of the construction, combination, and particular arrangement of parts hereinafter described and pointed out in the claims.

For full comprehension, however, of my invention, reference must be had to the accompanying drawings forming a part of this specification, in which similar reference characters indicate the same parts, and wherein:

Figure 1 is a front elevation of a part of a railway car heating system containing my invention; Fig. 2 is a fragmentary side elevation showing the heating coils and car floor in section. Fig. 3 is a plan view of the structure shown in Figs. 1 and 2; Figs. 1, 5 and 7 are detail front elevation, side elevation and sectional view, respectively, of the adjustable device for effecting the connection with the radiator at any one of a number of difierent points; Fig. 6 is a transverse vertical sectional view taken on line A A Fig. 5; Fig. 8 illustrates the development of the valve of the device shown in Figs. 4 to 7 inclusive; Fig. 9 is a plan view of the thermostatic controller. Fig. 10 is a side elevation thereof; Fig. 11 is an elevation of the front side of the controller partly 1n sectional view; Fig. 12 is a sectional view of the controller taken on line D D Fig. 11; Fig. 13 is a sectional view taken on line F F Fig. 12; Fig. 14 is a sectional View taken on line G G Fig. 12; and Fig. 15 is a sectional view taken on line E E.

Fhave illustrated, as the preferred embodlment, my invention applied to a railway car heating system, a seat being indicated at a.

The heating coil of the car consists of four pipes b, 0, (Z, 6, the lowermost being divided and two branches, 7 and 9, taken therefrom beneath one of the seat.

A vertical section 2', is set into the coil adjacent to the branch 9 and is divided into a series of four chambers j, 73, Z, m, each effecting communication between the portions of the pipes on the opposite side thereof. Within this section a vertical tubular valve chamber 0 is cast having a series of ports n, g, r and s therein which communicate with the respective chambers j, 0, Z, m, such ports being in staggered arrangement. A tubular valve 2?, within this valve chamber, has a series of ports a, 'u, w, a: in the same horizontal planes and corresponding in capacity with the ports in the valve chamber and the lower end of this valve communicates with a port 3 in'the base of the section and has a pipe 2 of relatively small bore extending therefrom to a thermostatic valve operating device to be presently further alluded to. The upper end of the valve has a rigid collar 3 by which it is supported on the top side of the valve chamber and a tapped projecting sleeve 4: is plugged by the external screw threaded hub 5 of a miter gear 6 fixed in place by a pin 7, the valve being rotatably held against vertical displacement by a boss 8 upon the center of the interior of a screw cap 9 having an external hexagonal boss 10, and screwed into the tapped upper end of the casting. This valve is operated manually by a handle 12 fixed upon the outer end of a spindle 13 extending through a stuffing boX 14 in the side of the casting and having rigidly mounted upon its inner end a miter gear 15 intermes hing with the miter gear 6, thestufling box being carried by a screw plug 16 screwed into the side of the section; the plug 16 and cap 9 being of suflicient diameter to permit the gears 15 and 6 and the valve t, being removed for repairs or renewals.

The thermostatic operating device consists of a casting 20 chambered as at 21 to contain a diaphragm 22 having a central convex boss 23 on its outer side and on its inner side a hollow central cylindrical unmble 24, the latter working through 'an epithin g in a wall 25 and the former limited against movement in an outward directioh with the "diaphragm by an adjusting screw 26 set by a lock nut 27. This adjusting screw is carried by a cap 28 closing one side of the chamber and having an eccentricall y tapped opening 29 into which the end or pipe 2 is screwed. The portion of the casting beneath the diaphragm has connected thereto a pair or concentric drip pipes 30 and 31, the former comniunieating directly with the diaphragm chamber.

The opposite end of the casting has connected thereto an air intake pipe 83 and within the latter a steam inlet pipe 34 communicating with a port 35 terminating at one side in a valve seat 36 upon which bears a steam control valve37 operated by a handle 38 and stem 39, The Valve chamber 40 in which this valve is located communicates by a passage 41 with an opening in the axial line of the diaphragm thimble 24 and contains a hollow plug 43 with a square head 44 and screw threaded end 45 inserted through the casting and screwed through a wall 46 separating the passage 41 from a valve chamber 50, the end of the plug 43 projecting slightly into this valve chamber and serving as a valve seat, while a portion thereof within the passage 41 has a staggered series of ports 51.

A steam port 48 efliects a communication between this pas'isage 41 and a chamber 49. The valve withih this valve chamber is indicated at 52 andis carriedby a stem 53 having a rigid collar 54 and projecting through a wall 155 into the diaphragm thimble 24. The collar 54 limits the movement of the stem toward the diaphragm and affords a seat for one end of a helicalspring 55 encircling the stem and the valve seat 45, the valve having a washer 57 for obvious reasons. This valve chamber is closed at its upper end by a screw cap 58 and the lower end thereof communicates with a passage 60 which in turn communicates with a steam port 61 in a steam nozzle 62 arranged to direct a jet across an air chamber 63 into a delivery. pipe fconn'e'cted to the casting. by a coupling 65 containing an oppositely flared mixing chamber 66 and a drainage hole 67 communicating with chamber '63. Air is mixed with the steam by this deviceMIt enters from the. pipe 33 by passages 75 and .78 into the chamber 63.

The nozzle is "screwed into a tapped opening 80in the casting, and extends from the inner wall of the chamber 49 to a point about half way through the chamber 63. It consists of a pair of members 81 and 82, and a screw-plug 83 closes the outer end, of the hole. The member 81 is of conical form with an extended screw-threaded base and an axial boring 84 terminating at its apex end a diminutive bore. 85. The member 82 is in the form of a frustum of wider angle than the cone 81 and encircling the same near its apex and screwed into the portion of the hole 80 between the port 60 and chamber 63,,while the base of the cone 81 is screwed into the portion of the hole between the ports 49 and 60. The object accomplished by the nozzle is to cause steam projected from the ports 60 and 49 into chamber 63 to be enveloped air accompanying it from the chamber 63, the enveloping air being thoroughly 'commingled in the mixing chamber with the steam projected by the nozzle.

The. handle 12 registers with graduations "on a dial 166 on the frame of the seat a or other suitable place to indicate the relative angular position of the valve 7. The device per 86 withits nozzle for supplying the heating fluid and ejecting air and its thermostatic controller is a feature of my invention and is applicable to other uses,

than described. w

Operation: The operation of my improyed heating system is as follows: If maximum heat is desired, the handle 1 2,and with it the valve 6 is rotated to the position necessary to cause the port 8 only tobe open. Upon steam being admitted to the system by opening the valve 38, it will flow the train-pipe 100 through the pipe 34, ports35 and 41, plug43, valve chamber '50, port 60, nozzle member 82, and ,accompanied by air as above mentioned, through the mixing-chamber 66 to pipe f and thence through the entire coil, pipe g, port 190, to the main drip pipe 31. Simultaneously steam will ii'ow (see Figs. 14 and 1'5) from port '35 to valve chamber 40 and thence by passage 41 and ports 48, 49 and 84 to the diminutive jet perforation 85. If steam above a given maximum is flowing through the pipe 9 a portion of it will pass through port 3 and pipe 2 to the diaphragmcham b'er, a'nd cause the diaphragm to close the valve 52 thus shutting oh the steam supply to port 60 w'hich'is the main steam supply to the. system, The diminutive jet 85 is controlled solely by the valve 38 and consequently remains active until the valve 38 is closed, the effect being that a continuous small supply of steam flows through the the gears, one of the gears being mounted rigidly'upon thevalve.

6. The combination with aheat radiator, of a thermostatically controlled means for supplying a heating medium thereto. consisting of a steam passageway including an outer and an inner, valve chamber, an air passageway, said member being provided with a bore which extends from the steam passageway to said air passageway; steam injecting means having independent communication with each ol said chambers and arrangedin said bore so as to direct steam across saidair passageway, a Valve adapted to control the flow of steam through said outer chamber, a valve in said inner cham-' ber for controlling the flow of steam through saidi chamber, a diaphragm chamber formed with a drip outlet, a diaphragm in thediaphragm chamber, a fluid conductor connecting the radiator to the diaphragm chamber, and means operatively connecting the diaphragm with the valve in said inner chamber so as to regulate the passage of steam from said chamber to said'steam injecting means.

7 i The combination with a heat radiator, of a thermostatically controlled means for supplying a heating medium thereto consisting oi' a member containing a steam passage including a pair of valve chambers at the outer and inner ends thereof, an air chamber and an air port communicating therewith, saidmember being provided with a bore extending across and communicating with the air chamber and inner end of the steam passage, means closing one end of the bore, a diaphragm chamber having a drip outlet, and a steam port communicating with the diaphragm chamber; a pair of valves in the awr outer and inner valve chamber respectively of the steam passage and independently con trolling the. steamrsupply to and'from the steam passage, manual means operatively connected to the valve in the outer valve member, a diaphragm in the diaphragm chamber; means operatively connecting the diaphragm to the. inner valve; a branch steam port communicating with the first mentioned steam passage at a point between the valve chambers and also communicating with the said bore; a pair-of nozzles one encircling the other, and both nozzles being 10- catedin the said bore, one of the nozzles being fed from the inner-valve chamber of the steam passage and the other nozzle being fed from the branch steam port; a steam conductor connecting the radiator to the steam port of'the diaphragm chamber; a mixing chamber communicating with the air chamber andnozzles; and a conductor for the mixture of air and steam and extending from the mixing chamber to the radiator.

8.7111, a heating system, the combination with a radiator provided with a steam inlet and an air inlet, of a thermostatic device adaptedto govern the flow of steam through said steam inlet, and a tubular valve pro videdwith a plurality of ports adapted by oscillation of'a single member to put said thermostatic device into communication with any one only of a number of different portions of said radiator.

In testimony whereof Ichave signed my name to this specification 1n the presence of two witnesses.

LEWIS CRAVEN 0RD. WV'itnesses E. R. Prr'rs, GORDON G. CooKE.

G'opies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.:= 

